Contrary to assumptions about user stickiness, consumers of AI models will quickly switch to a better-performing or cheaper alternative. The 22% drop in ChatGPT usage after new Gemini models were released demonstrates that brand loyalty is low when model performance is the key value proposition.

User stickiness for AI models is increasingly driven by the 'harness'—the custom prompts, workflows, and integrations built around a specific model. This ecosystem creates high switching costs, even when a competing model offers incrementally better performance.

Counterintuitively, consumer AI apps like ChatGPT show more durable user loyalty than B2B developer tools. Developers can easily swap models via API calls, but consumers build habits and workflows that are harder to change, creating a more stable user base.

The assumption that enterprise API spending on AI models creates a strong moat is flawed. In reality, businesses can and will easily switch between providers like OpenAI, Google, and Anthropic. This makes the market a commodity battleground where cost and on-par performance, not loyalty, will determine the winners.

While individual AI companies see slightly lower retention than SaaS, Stripe's data reveals customers often churn from one provider directly to a competitor, and sometimes switch back. This indicates the problem being solved is highly valued, and the churn reflects a rapidly evolving, competitive market, not a lack of product-market fit for the category itself.

Despite significant history and memory built up in platforms like ChatGPT, power users quickly abandon them for models like Claude or Manus that provide superior results. This indicates that output quality is the primary driver of adoption, and existing "memory" is not a strong enough moat to retain users.

The most advanced AI users are 'polyamorous' with models, using an average of 3.5 different tools. This indicates a mature usage pattern where users select the best model for a specific job rather than relying on a single, all-purpose AI, challenging the 'winner-take-all' market theory.

The LLM assistance space is trending towards "winner-take-most" not just due to quality, but because of user inertia. The vast majority of ChatGPT users are not multi-homing or even exploring alternatives like Gemini, indicating a strong default behavior has been established.

Despite ChatGPT building features like Memory and Custom Instructions to create lock-in, users are switching to competitors like Gemini and not missing them. This suggests the consumer AI market is more fragile and less of a winner-take-all monopoly than previously believed, as switching costs are currently very low.